Apple added support for Ultra Wideband (U1 chip) in more countries including Argentina, Pakistan, Paraguay, and the Solomon Islands.
However, some countries are still lacking Ultra Wideband support.
Ultra Wideband isn’t available in these countries or regions:
Apple Support: Ultra Wideband availability
Developer:Try Nearby Communication framework.
QA engineer:Business as usual.
PM/DM:Consider adding features based on Ultra Wideband in participating countries.